Portable power device



FIG. 1 is a perspective view of a portable power device;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left elevation view thereof;

FIG. 5 is a right elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the drawings illustrate portions of the portablepower device which form no part of the claimed design.

CLAIM The ornamental design for a portable power device, as shown and described. 